Heat transfer during flow boiling in minichannels and microchannels is intimately linked to the liquid-vapor phase distribution
in the channels. The vapor phase exists as nucleating bubbles, dispersed bubbles, elongated bubbles, an annular core, or all
vapor flow completely filling the channel. Similarly, the liquid can exist as bulk liquid, slugs, thin film on the heated wall, or
dispersed droplets. A detailed analysis of various structures, supported by high-speed video images, is carried out, and the
effects on the associated heat transfer rates are discussed. This information provides insight into the flow boiling mechanisms
and guidance for future research in this area.

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Taylor & Francis

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Heat transfer

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Liquid-vapor phase

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Microchannels

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Minichannels

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Effect of liquid-vapor phase distribution on the heat transfer mechanisms during flow boiling in minichannels and microchannels